class Document < ActiveRecord::Base
 	 attr_accessible :description, :title ,:attachment, :status
 	 has_attached_file :attachment,
    :url => "/system/:class/:attachment/:id/:style/:basename.:extension",
    :path => ":rails_root/public/system/:class/:attachment/:id/:style/:basename.:extension"
  
	  has_many :clients, :through => :client_documents
 	 	has_many :client_documents
	  has_and_belongs_to_many :cases
 		validates_presence_of :title
		validates_attachment_presence  :attachment
		validates_presence_of  :description
 

 
end
